Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add GDvega/super-android-kotlin-firebase-skill --skill firebase-coregit clone --depth 1 https://github.com/GDvega/super-android-kotlin-firebase-skillWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/gdvega/super-android-kotlin-firebase-skill/firebase-core)<a href="https://agentmods.dev/skills/gdvega/super-android-kotlin-firebase-skill/firebase-core"><img src="https://agentmods.dev/badge/skills/gdvega/super-android-kotlin-firebase-skill/firebase-core/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/gdvega/super-android-kotlin-firebase-skill/firebase-core"><img src="https://agentmods.dev/badge/skills/gdvega/super-android-kotlin-firebase-skill/firebase-core.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00044 | $0.00650 |
| Opus 5.5 | $0.00018 | $0.00260 |
| Sonnet 5.5 | $0.00009 | $0.00130 |
| Haiku 4.5 | $0.00004 | $0.00065 |
Grade A, and why
firebase-core scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 105 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Purpose
Set up Firebase products safely and consistently in Android apps.
When to use
- Adding Firebase to an Android app.
- Fixing Firebase Gradle or google-services setup.
- Separating environments.
- Configuring Emulator Suite, Storage, Realtime Database, Remote Config or AI Logic.
Inputs to inspect
- Firebase products required.
- Gradle files and version catalog.
- google-services policy and environments.
- Existing rules and emulator config.
Required workflow
- Identify required Firebase products and environments.
- Review Gradle and BoM setup.
- Add the minimum SDKs/plugins.
- Plan rules and Emulator Suite validation.
- Run Android build and document manual Firebase console steps.
Rules
- Do not ask for private service accounts or production secrets.
- Separate dev/staging/prod projects when possible.
- Do not ship open rules.
- Use Emulator Suite for rules/functions when available.
- Consider costs and quotas for realtime listeners and storage.
Related existing skills
Local skills to invoke
- gradle-build
- security-privacy
- firebase-emulator-ci
- firestore
- firebase-auth
External companion skills to use when installed
Do not assume these companion skills are installed. Prefer the local skills above first, then consult Companion Skills for install and verification commands.
- firebase/agent-skills — use for deeper Firebase product, Firestore, Security Rules or emulator workflow guidance when installed.
Files commonly touched
app/build.gradle.ktssettings.gradle.ktsgradle/libs.versions.tomlgoogle-services.json policy docsfirebase.jsonfirestore.rulesdatabase.rules.jsonstorage.rules
Commands to validate
./gradlew assembleDebug
firebase emulators:start
firebase emulators:exec "npm test"
firebase deploy --only <target>
Common mistakes to avoid
- Committing service accounts.
- Mixing dev and prod Firebase projects.
- Using allow read, write: if true in production.
- Ignoring Storage/Realtime Database rules.
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 105 lines · 44 tokens per session scan A a891679cd193
firebase-core is a skill published in the GitHub repository GDvega/super-android-kotlin-firebase-skill (2 stars, last pushed 4mo ago), licensed MIT. It adds 44 tokens to every session and 650 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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